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Finding the Fourth Proportional to 153,221.98, 230,046.20 and 78,393.77

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Solution

The fourth proportional to 153,221.98, 230,046.20 and 78,393.77 is: 117,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,221.98 : 230,046.20 = 78,393.77 : x
  2. Step 2: Convert to fraction form
    153,221.98/230,046.20 = 78,393.77/x
  3. Step 3: Cross multiply
    153,221.98x = 230,046.20 × 78,393.77
  4. Step 4: Simplify right side
    153,221.98x = 18,034,190,021.12
  5. Step 5: Solve for x
    x = 18,034,190,021.12/153,221.98
  6. Step 6: Final answer
    x = 117,699.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.